IBM Performance Management

Configuring the PMI

To view performance data in the operational monitoring dashboards, the Performance Monitoring Infrastructure (PMI) on the WebSphere® Application Server must be configured to gather performance data.

About this task

Use the WebSphere Administrative Console to enable the PMI and set the PMI level on the WebSphere Application Server.

The PMI provides four predefined levels:

None
Basic
Extended
All

You can use a custom option to selectively enable or disable individual statistics. Each level includes the statistics from the level below it.

To display data in the operational monitoring dashboards, the attributes that are used in the dashboard calculations must be included in selected level.

By default, the WebSphere Applications agent sets the PMI level high enough to collect the required attributes.

Restriction: To see data in some of the Process Server and Transaction Manager group widgets, you must manually set the PMI level. For more information, see the fly-over help on the group widgets.

If you modify the PMI level with the WebSphere Administrative Console, you must verify that the level is high enough to collect the required data.

Procedure

To enable the PMI on the application server, complete these steps:
1. In the WebSphere Administrative Console, expand Monitoring and Tuning, and then select Performance Monitoring Infrastructure (PMI).
2. From the list of servers, click the name of your server.
3. Click the Configuration tab, and then select the Enable Performance Monitoring Infrastructure (PMI) check box.
4. Click Apply or OK.
5. Click Save to enable the PMI.
To set the PMI level on the application server, complete these steps:
1. In the WebSphere administrative console, expand Monitoring and Tuning, and then select Performance Monitoring Infrastructure (PMI).
2. From the list of servers, click the name of your server.
3. Click the Configuration tab, and then select the statistics set to use; Basic, Extended, All, or Custom.
4. Click Apply or OK.
5. Click Save to set the PMI level.
For information about the PMI level that is required for each attribute, see the Dashboard attributes section in the Monitoring Agent for WebSphere Applications Reference on the APM Developer Center > All Documentation. The monitoring overhead that is incurred when you turn on the collection of each attribute is displayed.

For information about customizing the PMI level, see Customizing PMI settings.